a u.s. ambassador and three others were killed in a terrorist attack on that diplomatic compound in libya. one state department official resigned wednesday and three others removed after an independent panel found security at the consulate was insufficient and state department leadership was to blame. >> the security posture at the special mission compound was inadequate for the threat environment in benghazi. and in fact, grossly inadequate to deal with the attack that took place that night. >> the report also found the attack was not the result of protests over an anti-islamic video as was first reported. later today, two deputy secretaries of state will testify before congress about the attack. secretary of state hillary clinton will not be there. she's recovering from a concussion after fainting from the stomach flu. aides say clinton, the most traveled u.s. diplomat ever won't be making any trips at all for a few weeks. state department officials dismiss claims that clinton is faking he